How to display pdf file through json in mvc

Like Manav Pandya said, your question is not clear enough. However, if you don’t want to rely on the browser to display the PDF file, you may use LEADTOOLS DocumentViewer toolkit which contains controls and classes for loading, displaying and converting PDF files. You can try the online demo for the viewer using this link:
https://demo.leadtools.com/JavaScript/DocumentViewer/

The code to load and display a file looks like this:

var url = "https://demo.leadtools.com/images/pdf/leadtools.pdf";
var pts = null;
// Call the "LoadFromUri" and pass success and failure callbacks to the promise
lt.Documents.DocumentFactory.loadFromUri(url, null).done(function (document) {
// Set the document in the viewer
_this.documentViewer.setDocument(document);
var ImageViewer = _this.documentViewer.view.imageViewer;
}